<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>变量使用</title>
</head>
<body>
    <h1>我的兴趣爱好是:{{hobby}}</h1>
    <h3>用户名:{{user.username}} 邮箱:{{user.email}}</h3>
    <h3>用户名:{{person.username}} 年龄:{{person.age}}</h3>
    <h3>城市:{{city}}</h3>
</body>
</html>